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Fans setup Debate Intake vs Exhaust

post #1 of 13
Thread Starter 
I am about to do my next build I came across this issue of how to use my rear fan so Intake or Exhaust is the question.

My case is the Corsair Air 540.



Beta Specs for the new build:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor (£241.02 @ Ebuyer)
CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler (£83.88 @ Amazon UK)
Motherboard: Asus Maximus VI Hero ATX LGA1150 Motherboard (£146.98 @ Ebuyer)
Memory: G.Skill TridentX 16GB (2 x 8GB) DDR3-1866 Memory (£133.72 @ Ebuyer)
Storage: Samsung 840 EVO 250GB 2.5" Solid State Disk (£99.99 @ Amazon UK)
Storage: Western Digital BLACK SERIES 1TB 3.5" 7200RPM Internal Hard Drive (£57.46 @ Amazon UK)
Video Card: Gigabyte GeForce GTX 780 Ti 3GB Video Card (£557.74 @ Scan.co.uk)
Case: Corsair Air 540 ATX Desktop Case (£105.99 @ Amazon UK)
Power Supply: Corsair 860W 80+ Platinum Certified Fully-Modular ATX Power Supply (£139.98 @ Amazon UK)
Monitor: Asus VG248QE 144Hz 24.0" Monitor (£275.00 @ Amazon UK)
Case Fan: Corsair Air Series SP120 High Performance Edition (2-Pack) 62.7 CFM 120mm Fans (£20.53 @ Aria PC)
Case Fan: Corsair Air Series SP120 High Performance Edition (2-Pack) 62.7 CFM 120mm Fans (£20.53 @ Aria PC)
Case Fan: Corsair Air Series SP120 High Performance Edition (2-Pack) 62.7 CFM 120mm Fans (£20.53 @ Aria PC)
Case Fan: Corsair Air Series SP120 High Performance Edition (2-Pack) 62.7 CFM 120mm Fans (£20.53 @ Aria PC)
Other: Razer Blackwidow 2013 Expert Mechanical Keyboard (£85.00)
Other: Desk from staples 1.8m (£290.00)
Total: £2298.88
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-24 15:43 GMT+0000)

So I used my awesome drawing skills and made this sketch this is supposed to represent the air flow in the case with 3 intake in the front and 4 Exhaust total in the top with the Corsair H100i Rad, I will be using 120 MM Fans SP version from Corsair as seen in the building specs ab




Please discuss what you think is better and most importantly why is it better in your opinion.


Note: I saw a lot of threads that had some kind of information about this on the forums but I couldn't come to a conclusion about what to use specifically for this case.


Best Regards,

Nuno
post #2 of 13
I would run everything intake and just the rear as exhaust. It's best to feed the H100i with fresh air so I would (and in my case I do) run it as intake along with running athe fronts as intakes.

Also be sure the get the PWM version of the SP120's or else the are very loud!

And you don't need that big of a psu for 1 780ti, the 760w variant of that psu would even be overkill.
post #3 of 13
Thread Starter 
Quote:
Originally Posted by THEStorm View Post

I would run everything intake and just the rear as exhaust. It's best to feed the H100i with fresh air so I would (and in my case I do) run it as intake along with running athe fronts as intakes.

Also be sure the get the PWM version of the SP120's or else the are very loud!

And you don't need that big of a psu for 1 780ti, the 760w variant of that psu would even be overkill.

I will go for SLI in a couple of months. The sound is not an issue I just want the best air cooling possible without any kind of restriction.

Thank you for sharing your opinion.
post #4 of 13
Thread Starter 
Anyone else please?
post #5 of 13
Quote:
Originally Posted by THEStorm View Post

I would run everything intake and just the rear as exhaust. It's best to feed the H100i with fresh air so I would (and in my case I do) run it as intake along with running athe fronts as intakes.

Also be sure the get the PWM version of the SP120's or else the are very loud!

And you don't need that big of a psu for 1 780ti, the 760w variant of that psu would even be overkill.
Agreed, all intakes and one rear exhaust is normally the way I go with most cases.

Is the new build finalised? I can definitely see some tweaks that could be made here and there to improve performance/get better value for money. I'd create a new thread though, don't want to clutter up this one. smile.gif
Define
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CPUMotherboardGraphicsRAM
Intel Core i7-3770K @ 4.3GHz Gigabyte GA-Z77X-UD5H ASUS GeForce GTX 980 Ti STRIX 6GB @ 1500MHz 2x8GB Kingston HyperX Fury DDR3 @ 2400MHz 
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Samsung 840 Pro 256GB Crucial MX100 512GB Noctua NH-U14S 3x Noctua NF-A14 FLX 
OSMonitorMonitorKeyboard
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PowerCaseMouseMouse Pad
EVGA SuperNOVA P2 650W Fractal Design Define R5 Black Mionix Naos 7000 SteelSeries QcK 
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post #6 of 13
Actually, I'd set everything up as an intake, including your H100i.

Though the 4770k does get hot, it doesn't actually produce that much energy/heat... The effect the "warm" air from the H100i has on your GPUs should be negligable, but the heat from your ~300W+ GPUs would certaintly heat up your CPU.

That would maximize airflow through your case, and push some hot air out the back vents of your GPUs and PSU. It would also slow down dust buildup, which means less maintance.


EDIT: 1 rear pull fan would be good too, you should experiment with both.
Edited by brucethemoose - 3/24/14 at 2:29pm
Bruce
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Bruce
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Corsair TX750 V1 Antec 300 Black Illusion  Logitech G400s Xonar ST 
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post #7 of 13
Thread Starter 
Quote:
Originally Posted by twerk View Post

Agreed, all intakes and one rear exhaust is normally the way I go with most cases.

Is the new build finalised? I can definitely see some tweaks that could be made here and there to improve performance/get better value for money. I'd create a new thread though, don't want to clutter up this one. smile.gif

Not yet going to buy the parts in the end of this month waiting the pay check smile.gif

Anyway feel free to give opinions on the build as well if you think you could get the same quality/performance parts for less. keep in mind I am buying in the UK not as many stores to buy from.
Edited by Nu No - 3/24/14 at 2:29pm
post #8 of 13
Quote:
Originally Posted by brucethemoose View Post

Actually, I'd set everything up as an intake, including your H100i.

Doesn't setting up everything as intake make it so the fans end up fighting each other, reducing total flow?

I mean sure, it's not airtight or anything, so it'll seep out of the cracks in the enclosure, but you won't get the "stiff breeze" sort of flow you would with having an exhaust.
post #9 of 13
Quote:
Originally Posted by Mand12 View Post

Quote:
Originally Posted by brucethemoose View Post

Actually, I'd set everything up as an intake, including your H100i.

Doesn't setting up everything as intake make it so the fans end up fighting each other, reducing total flow?

I mean sure, it's not airtight or anything, so it'll seep out of the cracks in the enclosure, but you won't get the "stiff breeze" sort of flow you would with having an exhaust.

Depends. I haven't seen an air 540 myself, but it looks pretty open and well vented. If you remove the extra PCI slot covers, it should also push the hot air from the bottom 780 TI out of your case, instead of drawing it up to the top fan and heating up your top 780 TI in the process... Which is the main cooling problem you'll run into.

But you're right. If the case is more restrictive than I think, a single exhaust fan would be better.

Either way, you should feed your H100i fresh air from outside the case.
Bruce
(20 items)
 
  
CPUMotherboardGraphicsRAM
4670k Asus Z87 Pro HIS 7950 IceQ X2 2x2gb + 2x4gb DDR3 1333 
Hard DriveHard DriveHard DriveOptical Drive
Seagate 1TB 7200RPM OCZ Agility 4 128GB PNY 240GB LG Blu Ray Burner 
CoolingOSMonitorKeyboard
Hyper 212+ with extra fan Windows 10 Education x64 Shimian QH270 @110hz Medieval Dell OEM Keyboard 
PowerCaseMouseAudio
Corsair TX750 V1 Antec 300 Black Illusion  Logitech G400s Xonar ST 
AudioOtherOtherOther
Fostex T50rp with BMF mod Archer T9E Wifi adapter 2x Yate Loon D12SL-12D 120x38mm fans Thermalright TY-143 fan 
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Bruce
(20 items)
 
  
CPUMotherboardGraphicsRAM
4670k Asus Z87 Pro HIS 7950 IceQ X2 2x2gb + 2x4gb DDR3 1333 
Hard DriveHard DriveHard DriveOptical Drive
Seagate 1TB 7200RPM OCZ Agility 4 128GB PNY 240GB LG Blu Ray Burner 
CoolingOSMonitorKeyboard
Hyper 212+ with extra fan Windows 10 Education x64 Shimian QH270 @110hz Medieval Dell OEM Keyboard 
PowerCaseMouseAudio
Corsair TX750 V1 Antec 300 Black Illusion  Logitech G400s Xonar ST 
AudioOtherOtherOther
Fostex T50rp with BMF mod Archer T9E Wifi adapter 2x Yate Loon D12SL-12D 120x38mm fans Thermalright TY-143 fan 
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post #10 of 13
Thread Starter 
Quote:
Originally Posted by brucethemoose View Post



Depends. I haven't seen an air 540 myself, but it looks pretty open and well vented. If you remove the extra PCI slot covers, it should also push the hot air from the bottom 780 TI out of your case, instead of drawing it up to the top fan and heating up your top 780 TI in the process... Which is the main cooling problem you'll run into.

But you're right. If the case is more restrictive than I think, a single exhaust fan would be better.

Either way, you should feed your H100i fresh air from outside the case.

So the best way would be all intake and just the rear as exhaust? What fan should I use the AF 140MM or the SP 120MM?
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